I wonder how much aether it takes Hydaelyn just to communicate briefly from the Aetherial Sea? She constantly talks about being to weak, but then she claims to have kept enough on reserve just to fight test WoL (as if all their trials were not proof enough) and then there's the Mother Crystal which we find out is just an accumulation of aether that build up over thousands of years. Was she just that averse in using those sources?